AM18x Wireless connectivity Product description
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Contents |
General Description
The comprehensive wireless connectivity package enables you to add wireless connectivity support to the AM1808 features. As part of the AM1808 kit, it immediately enables you to add wireless connectivity capabilities to the Applications Processor. This solution includes an integrated system solution for both WLAN and Bluetooth (BT) based on TI's wireless devices.
The package encapsulates both the HW component in the form of an add-on board for AM1808, as well as a complete SW package which includes the WLAN driver and Bluetooth initialization scripts. Both were fully integrated and tested with this specific platform, thus minimizing integration time.
Solution Block Diagram
The wireless connectivity solution is based on a WiLink™ 6 chipset solution populated on a module. WiLink™ 6 is TI's 6th generation of wireless connectivity devices, encompassing a combo Bluetooth-WLAN device in 65nm technology. This device is accompanied by a DC2DC converter and a Front-End module (designated FEM). 
Wireless Connectivity Module by LSR
The LSR module provides the complete wireless connectivity chip set described above including clocks and powering scheme. It may be procured directly from LSR and placed on any AM1808,user application board. For further information regarding the module specification, go to Hardware Specification page.
DC2DC Converter
The DC2DC converter is a high-efficiency low-noise, switched mode power supply converter (SMPS). It converts VBAT levels in the 2.7 - 5.5 V range to 1.8V, which is required by the device.
Front-End Module
The Front-End Module (FEM) device carries a powerful PA which is used to provide WLAN output power gain. Additionally, a 3-way switch is located in the FEM device to enable antenna sharing among WLAN and Bluetooth, thus providing a single antenna solution supporting both WLAN and Bluetooth.
 WL1271 LSR Module |
 WL1271 daughterboard |
 AM18x EVM + WL1271 daughterboard |
Product Features and Capabilities
General
- Supported OS
- Linux ver. 2.6.x
- Supplies
- VBAT - 3.0 - 5.5V battery supply
- VIO - 1.8V I/O supply
- Clocks
- Reference clock - 38.4 MHz
- Sleep clock - 32.768 KHz
- Host I/Fs
- SDIO, 4-bit, 25 MHz for WLAN
- UART, with flow control for Bluetooth
WLAN
- WLAN station
- 802.11 b,g,n,d,e,i compliant
- 802.11n single antenna
- 20MHz, 1 spatial stream support
- RX STBC support
- Security
- Personal security protocols and services covering: WEP, WPA & WPA2
- Open-source supplicant
- QOS
- EDCA capability including packet bursting and TXOP
- U-APSD capability
- Scan
- Active scan
- Passive scan
- Roaming
- Low RSSI roaming trigger
- BSS loss roaming trigger
- WPS (Linux only)
- WPS enrollee, PIN mode
- WPS enrollee, PBC mode
Bluetooth
- Bluetooth 2.1 + EDR compliant
- Linux: Integrated to BlueZ protocol stack
- Validated Linux Profiles: A2DP, OPP, FTP
Misc
- Bluetooth-WLAN coexistence:
- Best-in-class single antenna coexistence scheme enabling a full proof shared antenna solution
- All data & voice use cases combinations are supported
- Proprietary low power schemes:
- Provides extremely low power consumption in critical profiles (such as: WLAN idle connection and Bluetooth scan)
Links
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